Seismic stability evaluation for bank sections of gravity dams in gorge area

WANG Chao; ZHANG She-rong; YU Mao

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Seismic stability evaluation for bank sections of gravity dams in gorge area

更新时间：2026-06-25

- Seismic stability evaluation for bank sections of gravity dams in gorge area
- Vol. 35, Issue 5, (2014)
- 作者机构：
  
  天津大学水利工程仿真与安全国家重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV312
- Online First：09 June 2014，
  
  Published：2014
- 稿件说明：
移动端阅览
WANG Chao, ZHANG She-rong, YU Mao. Seismic stability evaluation for bank sections of gravity dams in gorge area[J]. 2014, 35(5).
DOI：

WANG Chao, ZHANG She-rong, YU Mao. Seismic stability evaluation for bank sections of gravity dams in gorge area[J]. 2014, 35(5). DOI：

摘要

从概率的观点出发，结合确定性矢量和安全系数方法，对设计基准期内随机地震条件下的重力坝岸坡坝段动力抗滑稳定性评估方法问题进行了初步探讨。首先，基于确定性动力时程分析法，得出坝段抗滑矢量和安全度时程曲线，评价一次确定性设计地震作用下的坝体稳定；然后，考虑基准期设计烈度下地震的随机性，进行坝体动力稳定的可靠度分析。通过Gram-Charlier级数拟合法和随机加权最大熵法，得到坝体动力稳定安全度时变曲线中最小值的概率分布函数及其动力可靠度；最后，结合确定性和概率性分析结果，综合评价设计基准期内地震作用下的坝体抗滑稳定性。工程实例分析结果表明，采用确定性与概率性结合的互补方法，能够进一步认识动力稳定分析中安全裕度的合理性评价问题，进而更加合理地评估整个设计基准期内重力坝的动力抗滑稳定性。

Abstract

From the viewpoint of probability theory

combined with the deterministic vector sum method

the stability evaluation methods are studied for the bank sections of gravity dam under random seismic loads. Firstly

deterministic stability evaluation is made through the history curve of safety factors

which is obtained by dynamic vector sum method

under a certain seismic load. Secondly

the probability density function(PDF) of the minimum value of dynamic stability safety factors and the dynamic reliability are got through the Gram-Charlier series fitting method and the weighted maximum entropy method under random seismic loads. Thirdly

comprehensive evaluation is made by both deterministic results and probabilistic ones during the whole design period. The example results show that the deterministic and probabilistic methods can complement each other to make a comprehensive seismic stability evaluation for the bank sections of the gravity dam during the whole design period.

关键词

Keywords

references

Views

2201

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Deep anti-sliding stability analysis of gravity dam based on Cosserat continuum theory

Analysis of anti-sliding stability in deep foundation of Xiangjiaba gravity dam based on interface element method

Coupled analysis of stress-seepage interaction for gravity dam by element-free method

Study on stability against deep sliding of gravity dam

Study of true safety degree of failure along foundation surface of gravity dam

Related Author

ZHOU Chuang-bing

ZHOU Wei

CHANG Xiao-lin

MA Gang

ZHANG Qing

WANG Yi-feng

XU Li-qun

CHEN Xiao-hu

Related Institution

Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan University

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University

China Three Gorges Project Corporation

College of Civil Engineering, Hohai University

Changjing Institute of Survey, Planning, Design and Research

AI问答

⁰